Taxi drivers across Spain were set to keep striking on Tuesday against ride-hailing competitors such as Uber and Cabify, which they say unfairly threaten their livelihoods after government negotiations ended without a deal.…

After a successful launch in April this year, NASA's newest planet hunter, the Transiting Exoplanet Survey Satellite (TESS), has now started its search for planets around nearby stars. Officially beginning science operations…

Scientists reported setbacks Tuesday in the quest for an AIDS cure, and highlighted concerns about inconclusive evidence linking a promising new HIV drug to birth defects. According to research presented…